calculate width of left pane based on the max length of example filenames

[rnag]

• cargo-rx version: 0.1
• Rust Compiler (rustc) version: 1.59
• Operating System: Mac OS X

Description

It would be ideal to calculate the current console width, then calculate the max width of the stem of each example file (filename without the extension). The max stem width can then be used to set the width of the left pane, and the remaining console width can be taken up by the preview pane on the right.

For example (note the three dots ... below):

What I Did

Within my project folder, I just ran:

$ rx